Filter microplastics from rivers [Grade 9 work]?

We have to write a term paper this school year (grade 9), and I've chosen biology . I'm still in the planning stages and think I've found an interesting topic. For the term paper, we also need an experiment or a survey, etc., so there's a practical component . The relevant question: What are the…

Does 95% of microplastics come from developing and emerging countries without organized waste disposal, and from ships for which disposal in port is too expensive?

How is plastic waste from Germany, for example, supposed to end up in the sea if it is 100% collected and used as an energy-rich additional fuel for cement plants and waste incineration plants, saving heating oil and gas?

Microplastic ban: What happens to glitter watercolors and other artist paints?

Hello, I have watercolor paints here that shimmer and glitter. Will they no longer be available for purchase? I find this ban so stupid and completely unnecessary. There are much more serious things that need to be changed, but not something like this.